“Cry to save the world,” “’Classmate’ (i.e. breed) to save the world,” “Defeat a person’s deviances (sorry ‘distorted desires’) to save the world,” “Sing to save the world.” The JRPG genre is positively filled with these abstract ideas of turning a certain emotion or action into a mechanic to build the game around. I suppose we shouldn’t be overly surprised that there’s a “kiss to save the world,” game too. Enter Exstetra. Exstetra was, originally, a PlayStation Vita and 3DS title, albeit one that didn’t quite drum up the same attention or prestige as Conception, Persona, Blue Reflection, or the…